HuntingNet.com Forums - View Single Post - Different fletching / tip, similar arrows. 60 gr. = 22 fps faster

12-04-2008 | 01:21 PM

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im ocd

Joined: Jun 2008

Posts: 393

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From: USA

Different fletching / tip, similar arrows. 60 gr. = 22 fps faster

A comparison of two different arrows, the main difference is fletching and tip weight, because both arrows weigh 7.3 grains per inch.

Bow used: PSE X Force set on 53 LB 29’’ draw.

The bow paper tuned with both arrows at the same time, shooting a bullet tear with either.

Arrow 1: CX Maxima 250 with Blazers, wrap, 125 gr. tip. Total weight 385 gr. Speed 283 fps. FOC = 12% has 68.4 LB of KE.

Arrow 2: Redhead Carbon Max 2000 with 4’’ feathers, 85 gr. tip. Total weight 325 gr. Speed 305 fps. FOC = 11% with 67.1 LB of KE.

I shot four 3 shot groups @ 40 yards to compare accuracy:
Arrow 1: 3 in, 4.25 in, 2.25 in, 2.5 in. Average 3 inches
Arrow 2: 4 in, 3 in, 1.5 in, 2.5 in. Average 2.75 inches

The 385 gr. arrow is 22 fps slower than the 325 gr. at launch.
Accuracy at 40 yards is basically equal.

I used a calculator http://home.att.net/~sajackson/ballistics.html for the next part:
Arrow 1:
@ 20 yards: 275 fps 65 LB of KE
@ 30 yards: 272 fps 63 LB of KE
@ 40 yards: 268 fps 61 LB of KE

Arrow 2:
@ 20 yards: 292 fps 61 LB of KE
@ 30 yards: 285 fps 59 LB of KE
@ 40 yards: 266 fps 51 LB of KE

I thought some people might find this interesting.

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